If a host on a network is permitted to access another host on a different network via an ACL on the source host's router, does that automatically deny other hosts on the same network as the source host?
If you need something 100% answerable, here's is a situation:
There are two networks, and three hosts:
Network A - 220.127.116.11/27:
18.104.22.168 (hostA, PC) 22.214.171.124 (hostB, PC)
Network B - 126.96.36.199/27:
188.8.131.52 (hostC, webserver)
If hostA wants to connect to hostC, but the following ACL is placed on hostA & B's router interface connected to their switch:
100 permit tcp host 184.108.40.206 host 220.127.116.11 eq www
Is hostA automatically denied when trying to connect to hostC webserver because only hostB was permitted? Or is it allowed as the whole network wasn't denied, even though hostA wasn't given an explicit permit entry?
Also, if I were to add:
100 permit ip any any
to the end of the ACL, would hostA still be unable to connect to the webserver?